I ran across Dave Cheney's httpstat tool recently and tried to get it working but I'm not a Go person so that failed. I re-discovered it closing out a metric crap ton of browser tabs and thought "hm… I wonder if it is in brew yet". So a quick:

brew install httpstat

gave it to me perfectly. I can now do things like:

httpstat http://dave.cheney.net/

HTTP/1.1 200 OK
Server: nginx/1.2.1
Date: Mon, 03 Oct 2016 08:46:43 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.4.45-0+deb7u2
Link: <http://dave.cheney.net/wp-json/>; rel="https://api.w.org/"

Body stored in: /var/folders/rf/3tfhwgrj1sl85y6rcs4x_s5c0000gn/T/tmpsGnFLB

  DNS Lookup   TCP Connection   Server Processing   Content Transfer
[    16ms    |      265ms     |       932ms       |       947ms      ]
             |                |                   |                  |
    namelookup:16ms           |                   |                  |
                        connect:281ms             |                  |
                                      starttransfer:1213ms           |

Here's an example from one of my current sites (url omitted deliberately):

sjohnson@ScottJohnsonMacbookAir:~/me/fuzzygroup/gocode$ httpstat http://banks.OMITTED.com/

HTTP/1.1 302 Found
Cache-Control: no-cache
Content-Type: text/html; charset=utf-8
Date: Mon, 03 Oct 2016 08:48:06 GMT
Location: http://banks.OMITTED.com/auth/login
Server: Apache/2.4.7 (Ubuntu)
Set-Cookie: _banks_session=MkhuMmJDWEM5bGp5YUFqNUxNNzRFMlNLUENwam1MODd6YU9HUEZ6MzRvdHQ5RVZFTTF2WC9OcHo3UVNEbm5uRlJlWDJRa1JvL1dFOXN2TEdHWlREL1NrVG9weGlCMXl5OUtyU29lR2VvMm5NQ0hBQU9xZlBKTUEva0RDVFBNdjBHOTI3eXY1dS9nYXVOTUJSd1F2R1d2MVpmdnhXUGt4VUkyOFhVR0hjTUtkTkZNTVlYb1kzTVVKOWIwWXhvNEIzVGRFYmhCWktoVnlOWStPeFU5dXg3TE5ma09VeC9qL0tWK1pQekVYb1ZBaz0tLXVFMHJEMDlEb3ROdGMxanRTQkxEeEE9PQ%3D%3D--51a7cd19b7d987a98bb6071c37c41be2f81cfb22; path=/; HttpOnly
Set-Cookie: _passenger_route=1007719246; Path=/
Status: 302 Found
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Powered-By: Phusion Passenger 5.0.30
X-Request-Id: ae887d90-9484-484a-be35-e13bf3454c3d
X-Runtime: 0.002985
X-XSS-Protection: 1; mode=block
transfer-encoding: chunked
Connection: keep-alive

Body stored in: /var/folders/rf/3tfhwgrj1sl85y6rcs4x_s5c0000gn/T/tmp3wlc7H

  DNS Lookup   TCP Connection   Server Processing   Content Transfer
[    527ms   |      66ms      |       73ms        |        1ms       ]
             |                |                   |                  |
    namelookup:527ms          |                   |                  |
                        connect:593ms             |                  |
                                      starttransfer:666ms            |

Looking at this very clearly shows me that the single biggest slow down here is actually dns. Go figure. If I was optimizing for performance, I would never have thought to investigate a half second of DNS delay.

Thank you Dave Cheney!